An online XML formatter instantly turns tangled, unindented XML into clean, readable markup - and catches syntax errors before they break your application.
What is XML Formatting?
XML (eXtensible Markup Language) powers SOAP web services, RSS feeds, Android layouts, Maven build files, SVG graphics, and countless enterprise data exchanges. Raw XML received from a service or exported from a system is often a single line with no whitespace - nearly impossible to read or debug.
Formatting adds proper indentation so every element and attribute is clearly nested, sibling elements are at the same level, and the overall hierarchy is immediately visible.
How to Use the XML Formatter
- Open the XML Formatter on UtilWave.
- Paste your XML into the input field.
- The tool immediately formats the output with consistent indentation.
- Syntax errors - unclosed tags, missing quotes, illegal characters - are flagged instantly.
- Use the Minify button to strip all whitespace for production payloads.
- Everything runs in your browser; no data is sent to servers.
Common XML Formatting Scenarios
SOAP API debugging - SOAP responses are often a wall of text. Format them to see the envelope, header, and body structure clearly.
Android layout files - Android XML layouts can become deeply nested. Format them before code reviews to make indentation consistent.
Maven and Gradle build files - pom.xml files accumulate whitespace inconsistencies over time; format them to keep version control diffs clean.
SVG editing - SVG files are XML. Format them to understand the path and element hierarchy when debugging rendering issues.
RSS and Atom feeds - Validate feed XML against the parser before publishing to ensure subscribers receive it without errors.
XML vs JSON: When Do You Use XML?
XML is still the right choice when you need:
- Schema validation with XSD or DTD
- Namespaces for complex enterprise integrations
- Mixed content (text alongside child elements)
- Legacy SOAP services that require XML
For modern REST APIs, JSON is generally preferred for its smaller size and easier JavaScript parsing.
FAQ
Does the formatter validate well-formedness? Yes. The tool checks that all tags are closed, attributes are quoted, and the document has a single root element.
Can it validate against an XSD schema? The current tool validates well-formedness only. XSD schema validation requires a separate process.
Does it support XML with namespaces?
Yes. Namespace declarations (xmlns) are preserved and formatted correctly.
What is the difference between formatting and validating? Formatting changes the visual layout (whitespace, indentation). Validation checks whether the document conforms to XML rules.
Format your XML right now with the free XML Formatter.